Paging method for an MBMS service in a mobile communication system

Abstract

A paging method for informing a UE of the existence or absence of control information in transmission of the control information according to the support of an MBMS in a mobile communication system. In the method, paging according to a voice and packet service and paging according to an MBMS are differentiated from each other. Accordingly, a first paging indication channel for identifying the paging according to the voice and packet service and a second paging indication channel for identifying the paging according to the MBMS are differentiated from each other and used.

Description

PRIORITY[0001]This application claims priority to an application entitled “Paging Method For MBMS Service In Mobile Communication System” filed in the Korean Intellectual Property Office on Nov. 6, 2003 and assigned Serial No. 2003-78484 and Nov. 14, 2003 and assigned Serial No. 2003-80757, the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates generally to a multimedia broadcast / multicast service (MBMS) for a mobile communication system, and more particularly to a paging method for indicating the presence of control information on an MBMS.[0004]2. Description of the Related Art[0005]Currently, a code division multiple access (CDMA) mobile communication system provides a voice service and a packet service for transmitting mass storage data. Further, the CDMA mobile communication system has been developed into a multimedia broadcast / communication system capable of providing multimedia se...

AI Technical Summary

Benefits of technology

The present invention provides an efficient paging method in a mobile communication system providing an MBMS. The method includes transmitting a paging indication channel and a control channel to a UE, receiving a paging request from the UE, and transmitting the paging information of the MBMS through the control channel. The method also includes mapping the paging indication channel and information for identifying the MBMS. The technical effects of the invention include minimizing power consumption by waking a UE only at a necessary time point, enabling a mobile communication system to include a separate paging indication channel for the MBMS, and preventing abnormal operation of UEs that do not support the MBMS. The method also allows for efficient paging in the presence of multiple MBMSs and enables a UE to efficiently receive the MBMS at a specific time point.

Problems solved by technology

First, conventionally, PICHs used by UEs that do not support an MBMS are dedicated for an MBMS PO. Therefore, UEs having a PO overlapping with the MBMS PO may unnecessarily demodulate an S-CCPCH. Further, when the MBMS PO is defined according to each service, a UE having joined in a plurality of MBMSs does not have enough time to turn off a receiver. Therefore, a battery of the receiver may be wasted.

Secondly, when UEs having joined in an MBMS have a DRX cycle defined on the MBMS or a DRX cycle defined according to each MBMS in addition to a DRX cycle owned by the UEs, the UEs must frequently turn on the receiver. Consequently, it is difficult to use the DRX cycle.

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